Driving device.



A. H DE VOE. nmvme DEVICE. APPLICATION FILED MAR. 17, 1915.-

Patentd Mar. 26, 1918.

2 SHEETS-SHEET1- WITNESSES:

uni" mum. Cum: W,

A H. DE VOE'.

I bmvme DEVICE. I APPLICATiQN FILED MAR. I71 l9l5. 1,260,76. Patented Mar. 26,1918;

r- 2 SHEETS-SHEET 2. J6 T6 "WITNESSES:

by the thrust-lever is permitted to move under the action of a spring into contact relation with the coupling lever which it op eratively engages during the reversal of movementofthe coupling lever in extreme retracted position, thereby coupling together the driving and driven members without i1n pact of the interengaging parts. V In practice, the operating lever may b shiftedmanually for starting andstopping the rotation of the driven member, or it may be periodically operated by automatically acting means under conditions which exist in buttonhole stitching machines and other sewing .machines designed for producing separate groups or successions of stitches of predetermined number.

The present invention is represented in the accompanying drawings embodied in driving mechanism suitablefor use in con nection with a buttonhole sewing machine, and. comprising an actuating pulley or driving member with rotary drums or driven side elevation of the same, both views beingpartly in section. Fig. l is a perspective view of inter-engaging parts of the stopping mechanism. Fig. is a perspective view of oneof the driven members controlled in its operation by means according to the present improvement. Fig. 6 is a perspective view of the can'r-plate and its carrying arm. Fig. '7 is a perspective view of a part of the controlling means.

As shown in the drawings, the mechanism of the present improvement is sustained by avsupporting frame comprising the base 1 and bearing plates 2 suitably apertured to receive the shaft 3 with its surrounding sleeve 4. The grooved pulley or driving member 5 is constructed with a hub comprising oppositely extending eccentric bosses 6 and 7 mounted loosely upon the shaft 3 which is formed beyond the'boss 6 with an enlarged portion 3 integral with which the cylindrical drum 8 constituting one of the driven members and formed with an eccentric boss or crank-member 9 extending from its circular web oppositely from the pulley 5. Mounted upon the shaft 3 at the opposite side of the pulley 5 from the drum 8 is a second drum 10 having the cocentric boss or crank-chamber 11 and constructed integral with the sleeve 4; which is shown in Fig. 3 provided with an actuating worm 4.

in the same from its web a fulcrumstucl 12 upon which is mounted the hub 13of a segmental 'vlbratory lever 14 having at lts free end a cross-bar 15 provided at its outer edge with the notched seat 16. The lever 14 carries intermediate its ends the lateral stud 17 embraced by the apertured end 18' of connecting-rod having at its opposite end the strap 19 embracing one of-the eccentricsv 6 or 7 of the driving member Each of these drums hasextendingwithwhich is in practice embraced by a belt 7 leading from the source of power. During the rotation of the pulley and while the drum remains at rest, the lever l4l performs idle reciprocatory movements uponits fulcrum-stud 12 within said drum. I a

Each of the driven members carries a second fulcrunrstud 20 upon which is mounted the hub 21 of a segmental thrustlever extending circinnferentially toward the lever and formed at its adjacent end with the crossbar 23 adapted to enter and engage the angular seat 16 of the vibratory lever l-f-l when the latter is in its extreme outer position as represented in Fig. 1. Each drum is provided in its web portion with a clearance aperture 26 to receive the adjacent ends of the cross-bars. 15 and 23. The thrust-lever is normally pressed inwardlyby means of a spring 24: interposed between the bottom of a socket formed in its outer edge and the inner face of the drum. i

The lever .22 is formed with an outwardly promoting lug 25 passing through a clearance opening 26 in the face of th drum and carrying a laterally extendingroller-stud 27 adapted to rest upon the outer face of a segmental cannplate 23 disposed eccentrically to the face'of the drum and provided with an outwardly extending shank 29. The shank 29 is secured by means of fasten ing screws 30 within a transverse seat of the head 31 of the holding arm 32 having a tubular hub 33 fitted upon the rock-shaft The hub of one of the. levers 32 is secured by means of the set-screws 35 upon for introduction of the cross-bar 23 within the angularse'at- 16 as the-lever leassurnes its extreme outer posit-ion undenthe action ofthe crank element 6.

Each of the frame-members 2 carries a headed fulcrum stud-pin 361upon which is fitted the hub 87 of a vibratory segmental lever 38 constructed at its free end with cross-bar 39 which is fermedinits free edge with a notch to afford/an angular seatLO. Each lever 88 carries lntermedlate lts ends the lateral stud 41' embraced by the-aper tured enddlofa connecting rodhaving at its opposite end the strap 43 embracing the eccentric 9 or 11 ofone'of the drums 8 and i 10. During the rotation of the drums 8 and 10, the levers 38 perform idle reciprocatory movements upon their respective fulcrumstud 36.:

Upon "the rock-shaft 34intermediate each h of the frame-members"! and the adjacent hub 33 of the cam-plate carrying arm 29 is loosely fitted the hub 44 of a segmentalstop' lever 45 extendingicircumferentially to-' ward the lever 38 and: formed atits adjacent end with the cross-bar lfiradapted to enter and engage the angular seat :40 of the vibratory lever 38 When the latterls 1n 1ts eX- treme outer position as represented in" ;Fig.-

1. Each stop-lever hasia lateral stud-pin l7 entering thespace intermediatethe members 48 48 ofa forked lug eXtendinglat-- erally from. the hub 33, a spring49-bein-g interposed between saidstud-pin and the bottom of a socket50 inthe member48t By the: described resilient connection; the stop-lever 45:is. maintained normally in an initial relation with the ar1r1 32 unison with which it is adapted to pertorm operative movements, but when shifted inwardly from outer retractedpositionfwhile the vibratory lever 38 ismany-butextreme outer position, the crossbar 46 is'adaptcd to rest against the outer edge of the lever 38 until it assumes extreme outer position, \vhenthe stop-lever is adapted to snap lnto operative engagement with the lever38 under the actionof its spring 49, as represented in Fig 1. i i

By the obstruction ofthefreeireciprocator-y movement of. the lever 38 Whenlin its neutral position and during the reversal of its reciprocatory movement,-not only the vibratory lever, but itsactuatingmeans become arrested, a the momentum of the drum or drlven member being arrested bythe stop-lever through the eccentric and its ope 'ative connection withithe lever 38. 'As the stop-lever enters .into engagement {with the vibratory leverBS while the latter is L substantially at rest, 'its action thereon is etl'ected i without impact, and consequently without shock to themovingpartsin arrest ing their movement. .y .1; From the foregoing description; it will be seen that the coupling and stopping means of the present improvement are alike 111 the construction, relation andmodeot' operation of their) component parts, eachfcomprising a vibratory lever deriving 1ts operative movements fron'i a rotarycrank-element and adapted "for engagement by anarresting element con iprising a spring-pressed lever mounted upon a fulcrum sustained in fixed relation with that of said vibratory lever, theoperative connection of said lnterengaginglevers efiectmg a rigid locking connection between the actuating eccentric and the fulcrum-studs of said levers for interrupting the rotation of the one relatively to the other. Vllnlethe parts referred to are represented in Fig.4 as embodied in the stopping means, it will be observed that said 5 figure represents substantially the construction and arrangement: of the component parts of thejceupling means excepting that theparts of one of said mechanism are in right-handarrangement and the other in lefthand arrangement.

Sustained bythe spaced frame members 2 parallel with the shaft 3 is a rocleshaft 51 upon which are fitted the tubular hubs 52 ot operating levers 53, one or said hubs being fixed upon said roclrshatt by means of the set screws a l; while the other is fitted within a bearing aperture of the adjacent frame member 72, the opposite eXtremit-y ot the shaft 51 being journaled within a suitable aperture'ot the adjacent frame member 2; The free end of'each lever 53is pivotally connected by means of a pin55 with one end ot a short {link 56 havlng its opposite end p1votallyconnected by means of the pin 5'? with an ape'rtured lug 58 depending from fiXed thereon by means of the set-screw (S2 thehub 63 of a laterally extending lever (Bl. The lever (ll is shown provided at its outer end with a laterally prO ectmg roller-stud 65' Which enters the controlling cam-groovc 66 of the canrcliskfi'? which is adapted to be driven by suitable means, and preferably by an operative connection with the worm L" of the sleeve l.

The lever 64: is provided with the upwardly extending bearing bosses 68 and 69 111"Wll18l1 1s ournaled the rock-shaft 70 haw ing fixedupon its forward end by means of the .-set-screw 71 the hub 72 of a depending latch-arm -7 havinga lateral notch 74:

in its lower end for engagementwith the 1 drivin outer end of the lever 61, as represented in Fig 7; The rock-shaft has fixed thereon intermediate its bearings the collar to which attached one end of a spring 76 having its opposite end attached to the bearing lug 69 by means of which the latch-arm 7 3 is maintained yieldingly in retracted position and disengaged from the lever61, as repr'earantecl in dotted lines in Fig. '7.

The rock-shaft 7 O has secured to its oppo site end by means of thevset-screw 75 the hub '76 of a crank-arm 77 having an aperture in itsouter end entered by the hooked upper end of the treadle-rod 78 by means I of which it may be depressed for moving the la" 'h-arm from retracted position into operative ei'igagement with the lever 61. The lever 61 hassecurcd thereon by screws 7 9 the flat spring whose outer end rests upon the fixed stop-pin 81 set in the outer end of the adjacent fulcrinn-pin 36, whereby the lever 61 position and the latch-arm 7 3 retracted, as

represented in dotted lines in Fig. 7 thereby permitting the lever 61 to remain in normal position in engagement with the stop pin 81, as represented in Fig. 7. In this normal condition of the parts, the drum 10 remainsv continuously coupled with the driving pulley 5 through its connection with the actuating eccentric 7, and the cam-wheel 67 and any other parts of the machine connected with said drum receive from the latter constant operative movements. In the position of the parts represented in Fig. 1, wherein the lever 64: is depressed by its stud 65 entering the crook of the cam-groove 66, the toggle 5356 is straightened so as to temporarily disconnect the coupling and thrust-levers l t and 22 and maintain the vibratory lever 38 and stop-lever 45 in interengaging relation, whereby the drum 8 is maintained in a position of rest in a fixed and predetermined relation with the stationary fulcrum-studs 34: and 36. Hence, with the stitch-forming mechanism of a sewing machine operatively connected with the drum 8, the parts may be so timed that in the stopping of the drum the needle will invariably assume a final position retracted from the work;

As the cam-disk 67 continues its rotation, the stud 65 enters the upper and longer portion of the cam-groove 66, thereby lifting the lever 6st and bending the toggle 53, 56, by means of which the cam-plate carrying arm 32 is moved inwardlytoward the shaft 3 for release of the rollerstucl 27, which permits the thrust-lever 22 lever let when next in its extreme outerposi tion. Simultaneously with the actuation of V the arm 32, the stop-lever 45 is forcibly shifted outwardly the positiveen'gage-I ment of its'stud-pin fl with the forkeddug member l8, thereby freeingthe vibratory lever 38 for, operative movement when the drum 8 becomes coupled with the driving pulley 5 by the means described.

In case it is'desired to simultaneously ar rest the rotation of both of the drums 8 and 10, the treadle-rod 78 is drawndownwardly to shift the latch-arm 73 into engagement with the lever .61, so thatin the depression of the lever64: by encounter of therollerstud 65 with the crook of the cam-groove 66, the lever 61 will be carried with it, and both drums will be uncoupled from the driving pulley and forcibly stopped by engagement of the vibratory levers 38 with their l respective stop-levers 45. The release of the treadle-rod 7 8 permits the rocking of the shaft 70 under the action of its spring .76 for movement of the latch-arm 73-from its full-line or operative position into its dotted line or retracted position, as represented in Fig. 7, thereby permitting the rise of the lever 61 under the action of its spring 80. and the unlocking of the drum I0 and its recoupling with the driving pulley for resumption of its rotary movement and conse quently the continued movement of the cam-wheel 67 if connected therewith; the

corresponding control of the drum 8 being effected through the movement of the rollerstud 65 from the crook intothe longer straight portion of the cam-groove 66.

From the foregoing description it will be seen that, as the driving element 5 has a continuous movement extending over the described periods embracing the coupling and uncoupling of the driven member therewith, the movement of the vibratory coupling lever does not cease during such period, although means are provided for interrupting its vibratory movements. Thus, during its period of vibration thecoupling lever has a reciprocatory movement relatively to the driving member, while during its non-vibratory period the motion imparted to it by the driving element is converted into one of rotation in unison with the driving member with whiehit is temporarily locked in fixed relation. v y In the preferred form of the present improvement, the vibratory lever and its arresting means are mounted upon a relatively fixed support, whether that be one of the driven members or the supporting frame but it is obviously. unessentiai that both of these elements be'mounted upon the same part, so long'as suitable means are provided for interrupting the vibratory movements i at and thereby locking the said lever in fixed relation with its act ting cranlnelement upon the driving or d on member, 7

It willbe observed that the present invention involves as a characteristicfeature coupling means between. moving andstationary members, such means. in the embodiment shown, beingidentical in construction,

It will also be observed that the operation of these difierent coupling means is identical in that each serves to couple at the time of its operation a moving member and a stationary member. The coupling comprising the vibratory lever l iand the non-vibratory thrust-lever operates at its proper time to couple the continuously moving driving member 5 with one of the thenstationary driven members 8 or 10 so as to lock together the two members so connected for rotation in unison; while the coupling comprising the vibratory lever 38 and the nonvibratory thrust-lever L5 operates at its proper time to coupie one of the then moving drums 8 or 10 with apstationary member which in such case consists of the machine frame snpportlng the lovers 38 endettv, so as to lock together-thememembers so connected to bring the ,moving member, to the condition of rest- (it such stationary.member. It is evident that the presentimprove;- nient is adapted embod' ent in machines of widely different Ichai ,and may be very materially modified its construction and arrangement or parts within the scope or the present invention. I

Having thus set forth he nature ofthe invention, what l cliiiinfhercin is in comblnation, a.

1111i adri ig dev; rotarydriving 1ne1nber,"a driven member, an element connected therewith and mounted independently said dri' ing .inoniber,

V an operative connection.between the driving member and SnlClQiQlilQDt. whereby niotion ,is transmitted from the one 'to the other, and means whereby thecharacter oi said motion may be changed, f p

In a driving de vice, incombination, ro tarry-driving and driv *neinbers, jan actuatingelement movably ounted iipon the driven member. connection between the lattelYa-iidsaid actuating" elenient for im parting thereto reciprocatory movements, and means applied to the reciprocatory ele inent for converting. said motion into rotary iiiotion,'and'viceversa. 1

i In a driving device-fin combination; aldriving membena driven member, an olenientj movably mounted upon and adapted to rotate with said driven member, an opera-j ti-ve connectionbetween the, driving ,mem her and said element tor-transm tt ng 7 from ory movethe onetothe "other 'eciproicat ment, andfmeansactin f U range of said reciprocatory movement for changing the'character of said movement] 4. In a driving device, in combination, drivingand driven members, a reciprocatory eieinent sustained by one of said members and. having an operative connection with the other from which it derives idle reciprocatory movements, and means, independent of said connection, or interrupting said rcciprocatory movements.

In a driving device, in combination, driving and driven members, a normally flexible connection between them, and means for rendering said connect-ion rigid for establishing driving relation between said members. i

(3. In a driving device, in combination, driving and driven inen'ibers, a reciprocatory element sustained by the driven memher, an operative connection between the driving mei'nber and said element, and means carried by the driven member for locking said clement against reciprocation.

7. In a driving device, in combination, driving and driven members, a reciprocm tory clement sustained by the driven memher, an operative connection between the driving member and said element for nor.-

lmally imparting to. the latter reciprocatory movements of uniform amplitude, and loclring means adapted for engagement with saidelementat :an extreme end otits range of recipi'ocat r v movement for arresting saidmovement. f 1' i 8. En a driving device, in combination,

"driving and; driven .men'ibers, a vibratory elements each movable toward and from the other, means connected with the driving. member for imparting to one ot'. said Qelen'ients normal to-and fro operative movements, and means connected with the other of said elements and acting thereon while the first-named element; is in its closest proxinnit-v thereto for eii'ccting the interlocking engagement of said elements without shock. 1, 10. 111. a jdriving device, in combination, driving-and driven. members, a. vibratory lever pivotally;mounted. upon one of said members, if crank-element connected With the. other member, a connection between said crank-element and} the vibratory. lever, for in'iparting vibratory movements thereto, and means carried by the first-named membe' for arresting the vibratorymovements of saidlever. h i. Q 11.1 In 1 l driving device, in combination, driving and, driven membersg. a vibratory lever pivotally mounted upon one of said til) said thrust-lever into and out of operative relation with the first-named lever.

12. In a driving device, in combination, driving and driven members, a vibratory lever pivotally mounted upon one Of said members, means connected with the other member for impartin operative movements thereto, a thrust-lever also carried by the first-named. member and affording a stop for arresting the vibratory movements of the first-named lover, a spring for shifting the thrust-lever into operative relation with the vibratory lever, and means sustained independently of the driving and driven members for retracting the thrust-lever in opposition to said spring.

13. In a. driving device, in combination, driving and driven members, a vibratory lever pivetally mounted upon one of said members, means connected with the other member for imparting operative movements thereto, a thrust-lever also carried by the first-named member and aiiording a stop for arresting the vibratory movements of the first-named lever,a spring for shifting the thrust-lever into operative relation with the vibratory lever, a cam-plate movably moun ed independently of the driving and driven members and adapted for engagement with the thrust-lever, and means for shifting said cam-plate into and out of operative relation with the latter.

14-. In a driving device, in combination, driving and driven members, a vibratory lever pivotally mounted upon one of said members, means connected with the other member for im arting operative movements thereto, a thrust-lever also carried by the first-named member and affording a stop for arresting the vibratory movements of the first-named lover, a spring for shifting the thrust-lever into operative relation with the vibratory lever, a swinging arm mounted upon a fixed fulcrum, a cam-plate mounted thereon and adapted for engagement with the thrust-lever, a second arm also mounted upon a fixed fulcrum and having a link connection with the first-named arm and adapted to assume a position in substantial alinement with the second-named arm in one of its ex:

treme positions, and means for shifting "the second-named arm to move sald cam-plate for control of the position of said thrust lever.

15. In a driving device, in combmation, a

rotary driving member, a driven member,

means for establishing and interrupting driving relation between the same, an ele ment movably mounted independently of said driving and driven members, a connection between the driven member and said element for imparting to the latter operative movement, and a stop-element also mounted independently of the driving and driven members and adapted for movement into and out or the range of movement of. the first-named element for arresting its movement derived from the driven member and through it the driven member. 7

16. In a driving device, in combination, a rotary driving member, a driven member, means for establishing and interrupting driving. relation between the same, an element movably mounted independently of said driving and driven members, a connection between the driven member and said element for imparting to the latter operative movement, controlling means for said means mounted independently of the driving and driven members, and a stopelement also mounted independently of the driving and driven members and connected with said controlling means by which it is moved into and out of the range of movement of the first-named element'and adapted to arrest its movement derived from the driven memher and through it the driven member.

17. In a driving device, in combination, a rotary driving member, a driven ,member, means for establishing and interrupting driving relation between the same, an element movably mounted independently of the driving and driven members, a flexible connection between the driven member andsaid element for imparting to the latter operative movement, and means for rendering said connection rigid and thereby opposing the continued movement of thedriven member.

18. In a driving device, in combination, a rotary driving member, a driven member, means for establishing and interrupting driving relation between the same, an element movably mounted independently of, the driving and driven members, an operative connection between said driven member and said element for transmitting from the one to the other rcciprocatory movement, and means acting at an end of the range of said reciprocatory movement for arresting the same. and thereby stopping said driven member without shock.

y 19. In a driving device, in combination, a driven member actuating .means therefor adapted to be disconnected therefrom, an

3e mient mounted independently of said driven member, means connected with said driven member for impartingrto said element reverse movements, and arresting means controlled and adapted tofoperatively engage said element during the re versal of its operative movements;

20. In a driving device, in combination, a drivenj member, actuating means therefor "tained independently of said member, means connected withsaid driven member for imparting operative movements to said lever,

ments or said lever;

21. In a driving device, in combination, a

driven member, actuating means therefor adaptedto be disconnected therefrom, a vibratory leveimovable upon a fulcrumisus tained independently of saidinember, means connected with said driven member for imparting operative movements to said lever, a stoplever movable into [and outjot'dthe range of movement of said vibratory lever,

- and controlling means for said stop-lever.

tained independently of said member ineans therefor connected 22. 111 a driving device, in combination, a-

dri'ven member, actuating iiieans therefor adapted to be disconnected therefrom, a vibratory levermovableupon a fulcrumsus 'm'eans connected withsaid driven niiembertor imparting operative movements to said lever, a. stop-lever movable into and out of the range of movement of i said vibratory lever, zi'controlling lever 'ior said 'stop-lever, and a resilient connection between said controlling member, a step-lever also l H fixed'fulcruni, andi reless tin the engagement and-d1 en er" vers. i

25%.111 .a driving device, in combination, driving and drlven 1nembers, an element movably mounted upon said arisen ,iii eiiiber, means connected \vitl'i the drivingmember for impartingtosaidelement reverse operative movements, arresting means for interrupting said opera tive movements of, said;

element, an element mounted independently of the driven member, means connected with said driven member for imparting to said element reverse movements, arresting means for interrupting the operative movement of the second-named element, and controlling means for throwing each of said arresting means into engagement with its respective coacting element while the other is retracted, and vice versa. i I r 25. In a driving device, in combination, driving and driven members, an element movably mountedupon said driven member, means connected with the driving member for imparting tosaid element reverse operative movements, arresting means mounted upon the driven member and arranged for engagement with said element at the point of reversal of its movement, an element mount- [moveinentl ed independently of the, driven member,

'means ,connected with said driven member p v l gagement with the second named element at 'andmeans :t'or arresting the vibratory m'oveits point of reversal, and controlling means for throwing each of said arresting means into engagement with its respective coacting element while the other is retracted, and

vice versa.

26. In a driving device, in combination,

driving and driven members, a reciproca- Qtoryelement mounted upon the driven memberand deriving operative movements from the driving member, a reciprocatory element mounted upon a fixed support and deriving reciprocatory movements from the driven member, a thrust-sustaining element movably mounted upon the driven member and adapted for engagement wanna firstnamed reciprocatory element, a stop-element movably mounted upon a fixed support and adapted for engagement with the secondnamed reciprocatory elen' ent, and means in cluding a common operating member for ,alternatelv eiiectin the arrest of said reclprocatory elements by their respective coacting elements. a

2'7. In a driving device, n co'n'iblnation,

an actuating crank-element, recipiocatory element,asupportthereforrelative to'wliich 'said crank element is adapted 'to rotate, an

operative connects on between "said elements,

and arresting means adapted for connection with and disconnection from said reciproca tory element for respectively locknig and releasingtlie latter for3orfa'ga1nst operative 281 111 adrivin device in combination v b 7 i 7 an] actuating crz'tnbelement, a vibratory llever, a fulcrunr thereforrelative to which said cran'li} element is adapted to rotate, an

operativefconnection between the crank ele meat and Sa 1d lever, a motion-arresting lever having a fulcrum sustained in fixed relation with that of said vibratory'lever, "and means for shifting the motion-arresting lever into and out of positive interengaging relation with said vibratory lever.

29. In a driving device, in combination, an actuating crank-element, a reciprocatory element, a support therefor relative to which said crank-element is adapted to rotate, an operative connection between said elements, and arresting means active in an extreme position of said reciprooatory element for connection with and disconnection from the latter for respectively locking and releasing it for or against operative movement.

30. In combination, a moving member, a relatively stationary member, an element pivoted to the latter, an operative connection for communicating motion from the moving member to said pivoted element, and means fixedly pivoted relatively to said pivotal element for locking said pivoted element against motion relatively to the moving member.

31. In combination, a moving member, a stationary member, an element connected with thelatter and mounted independently 32. In a power-transmitter, driving,

driven and stationary members, connections between said driving and driven members for moving them in unison, similar connections between said driven and stationary members for arresting movement of the driven member, and means for controlling said connections.

33. In a power-transmitter, driving, driven and stationary members, disconnectible actuating mechanism between said driving and driven members for moving them in unison, disconnectible mechanism between said driven and stationary members for arresting movement of the driven member, and means for establishing or breaking down the operation of said disconnectible connections in alternation.

34. In a power-transmitter, a driver, a stationary part, driven members, disconnectible mechanism between said driven members and said driver for moving them in unison when coupled together, disconnectible mechanism between the stationary part and the driven members for arresting movement of said driven members when they are coupled up, and means for controlling said disconnectible mechanisms, said controlling means including devices permitting a contlnuatlon of the movement of one of said driven members after the other tary driven members, means for coupling 2 ach of said driven members to said rotary driving member for movement in unison therewith, means for uncoupling said first mentioned means, and additional means for stopping the rotation of one of said driven members while the other continues to rotate with the driving member,

36. In a power-transmitter, in combination, a rotary driving member, a pair of rotary driven members, means for coupling each of said driven members to said rotary driving member for movement in unison therewith, means for uncoupling said first mentioned means, andselective means for stopping the rotation of one or both of'said driven members.

37. In a power-transmitter, in combination, a rotary driving member, a pair of r0- tary driven members, means for coupling each of said driven members to said rotary driving member for movement in unison therewith, means for uncoupling said first mentioned means, and automatic means for stopping the rotation of one of said driven members and manually controlled means for stopping the rotation of the other of said driven members simultaneously with the first mentioned driven member.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALBERT H. DE VOE.

Witnesses: i

HENRY J. MILLER, HENRY A. KORNEMANN, Jr.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

It is hereby certified that in Letters Patent No. 1,260,760, granted March 26, 1918, upon the application of Albert H. De Voe, of VVestfield, New Jersey, for an improvement in Driving Devices, errors appear in the printed specification requiring correction as follows: Page 2, line 62, for the compound Word crankchamber read crcmk-member; same page, line 118, [or the compound Word setscrews read set-screw; page 5, line 72, claim 4, for the Word or reach/'07; and

that the said Letters Patent should be read With these corrections therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 25th day of June, A. D., 1918.

[SEAL] R. 1 WHITEHEAD,

Acting Commissioner ofPatents. 01. 7446. 

